Keysight Technologies V281C Service manual

Keysight V281C/D and W281C/D
1.0 mm Coaxial to Waveguide
Operating and
Service Manual

2 Keysight V281C/D and W281C/D Operating and Service Manual
Notices
Copyright Notice
© Keysight Technologies 1998 - 2018
No part of this manual may be reproduced in
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storage and retrieval or translation into a for-
eign language) without prior agreement and
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copyright laws.
Manual Part Number
00281-90056
Edition
Edition 5, October 30, 2018
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hardware and/or software described in
this document are furnished under a license
and may be used or copied only in accordance
with the terms of such license.
Declaration of Conformity
Declarations of Conformity for this product
and for other Keysight products may be down-
loaded from the Web. Go to http://www.key-
sight.com/go/conformity. You can then search
by product number to find the latest Declara-
tion of Conformity.
U.S. Government Rights
The Software is “commercial computer soft-
ware,” as defined by Federal Acquisition Regu-
lation (“FAR”) 2.101. Pursuant to FAR 12.212
and 27.405-3 and Department of Defense FAR
Supplement (“DFARS”) 227.7202, the U.S.
government acquires commercial computer
software under the same terms by which the
software is customarily provided to the public.
Accordingly, Keysight provides the Software to
U.S. government customers under its standard
commercial license, which is embodied in its
End User License Agreement (EULA), a copy of
which can be found at http://www.key-
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Keysight: (1) Furnish technical information
related to commercial computer software or
commercial computer software documenta-
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those terms, rights, or licenses are explicitly
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be under no obligation to update, revise or
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to any technical data as defined by FAR 2.101,
pursuant to FAR 12.211 and 27.404.2 and
DFARS 227.7102, the U.S. government
acquires no greater than Limited Rights as
defined in FAR 27.401 or DFAR 227.7103-5 (c),
as applicable in any technical data.
Warranty
THE MATERIAL CONTAINED IN THIS DOCU-
MENT IS PROVIDED “AS IS,” AND IS SUBJECT
TO BEING CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO THE MAXI-
MUM EXTENT PERMITTED BY APPLICABLE
LAW, KEYSIGHT DISCLAIMS ALL WARRAN-
TIES, EITHER EXPRESS OR IMPLIED, WITH
REGARD TO THIS MANUAL AND ANY INFOR-
MATION CONTAINED HEREIN, INCLUDING
BUT NOT LIMITED TO THE IMPLIED WARRAN-
TIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. KEYSIGHT
SHALL NOT BE LIABLE FOR ERRORS OR FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES
IN CONNECTION WITH THE FURNISHING,
USE, OR PERFORMANCE OF THIS DOCU-
MENT OR OF ANY INFORMATION CONTAINED
HEREIN. SHOULD KEYSIGHT AND THE USER
HAVE A SEPARATE WRITTEN AGREEMENT
WITH WARRANTY TERMS COVERING THE
MATERIAL IN THIS DOCUMENT THAT CON-
FLICT WITH THESE TERMS, THE WARRANTY
TERMS IN THE SEPARATE AGREEMENT
SHALL CONTROL.
Safety Information
CAUTION
A CAUTION notice denotes a hazard. It calls
attention to an operating procedure, practice,
or the like that, if not correctly performed or
adhered to, could result in damage to the
product or loss of important data. Do not pro-
ceed beyond a CAUTION notice until the indi-
cated conditions are fully understood and met.
WARNING
A WARNING notice denotes a hazard. It calls
attention to an operating procedure, practice,
or the like that, if not correctly performed or
adhered to, could result in personal injury or
death. Do not proceed beyond a WARNING
notice until the indicated conditions are fully
understood and met.

Keysight V281C/D and W281C/D Operating and Service Manual 3
Waste Electrical and Electronic Equipment (WEEE) Directive
This instrument complies with the WEEE Directive marking requirement. This affixed product label
indicates that you must not discard this electrical or electronic product in domestic household
waste.
Product category:
With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified
as a “Monitoring and Control Instrument” product.
The affixed product label is as shown below.
Do not dispose in domestic household waste.
To return this unwanted instrument, contact your nearest Keysight Service Center, or visit http://
about.keysight.com/en/companyinfo/environment/takeback.shtml for more information.
Sales and Technical Support
To contact Keysight for sales and technical support, refer to the support links on the following
Keysight websites:
–www.keysight.com/find/adapters
(product-specific information and support, software and
documentation updates)
–www.keysight.com/find/assist
(worldwide contact information for repair and service)

4 Keysight V281C/D and W281C/D Operating and Service Manual
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Keysight V281C/D and W281C/D Operating and Service Manual 5
Table of Contents
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Limitation of warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Exclusive remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
How to Use This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC . . . . . . . . . . 6
Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1 General Information
1.0 mm Connector Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Incoming Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Clarifying Connector Sex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2 Specifications
Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Temperature — What To Watch Out For . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
V281C and V281D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
W281C and W281D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mechanical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Center conductor protrusion and pin depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Supplemental mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mechanical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3MakingConnections
Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Supplies and equipment required but not supplied . . . . . . . . . . . . . . . . . . . . . . . . . 24
Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Required inspection tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Obvious defects or damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Connector contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6 Keysight V281C/D and W281C/D Operating and Service Manual
Concentricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Mating plane surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Damaged connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Connector wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Pin Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Protrusion and recession . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Making Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
1.0 mm connector alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
1.0 mm connector misalignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Cleaning Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Supplies and equipment needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Basic cleaning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Making a Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Connection procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Connecting waveguides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Using the Torque Wrench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Torque wrench procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Disconnection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Handling and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Keysight V281C/D and W281C/D Operating and Service Manual 7
List of Figures
Figure 1-1 Male and female connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2-1 V281C/D and W281C/D dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 3-1 Contact integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 3-2 Concentricity - female connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 3-3 Concentricity - male connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 3-4 Connector pin depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 3-5 Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 3-6 Forced misalignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 3-7 Cleaning illustration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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Keysight V281C/D and W281C/D Operating and Service Manual 9
List of Tables
Table 2-1 Environmental requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 2-2 Typical 1.0 mm connector characteristics . . . . . . . . . . . . . . . . . . . . . . 17
Table 2-3 Supplemental characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 3-1 Torque wrench information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

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Keysight V281C/D and W281C/D 1.0 mm Coaxial to Waveguide
Operating and Service Manual
11
1 General Information
1.0 mm Connector Overview 12
About This Manual 12
Serial Numbers 12
Incoming Inspection 13
Clarifying Connector Sex 13
Preventive Maintenance 13

1 General Information
12 Keysight V281C/D and W281C/D Operating and Service Manual
1.0 mm Connector Overview
These adapters are used for the measurement of components with 50 W,1.0 mm connectors with a
frequency range from DC to 110 GHz.
The 1.0 mm connector utilizes an air dielectric interface for the highest accuracy and repeatability.
The coupling diameter and thread size were chosen to maximize strength, increase durability, and
provide highly repeatable connections. The connectors are designed so that the outer conductors
engage before the center conductors.
To obtain the best performance possible, the manufacturing tolerances of the connectors are
tighter than the standard 1.0 mm specifications per the IEEE 287 connector standard.
About This Manual
This manual describes the V281C/D and W281C/D coaxial to waveguide adapters and provides
replacement part numbers, specifications, and procedures for using and maintaining the adapters.
Throughout this manual, the V281C/D and W281C/D coaxial to waveguide adapters will be
referred to as the V and W-band Adapters.
Serial Numbers
A serial number label is attached to each adapter. The serial number is made up of five numbers
and is unique to each adapter.

General Information 1
Keysight V281C/D and W281C/D Operating and Service Manual 13
Incoming Inspection
Keysight Technologies will arrange for repair or replacement of incomplete or damaged shipments
without waiting for a settlement from the transportation company. When you send a device to
Keysight Technologies, include the following information:
– Your company name and address.
– A technical contact person within your company, and the person's complete phone number.
– If you are returning one or more devices, include the part numbers and serial numbers.
– Indicate the type of service required.
– Include any applicable information.
Clarifying Connector Sex
In this manual, connectors are referred to in terms of their device sex.
Figure 1-1 Male and female connectors
Preventive Maintenance
The best techniques for maintaining the integrity of these adapters is to include routine visual
inspection (using 10X magnification), cleaning, and proper connection techniques. Failure to
detect and remove dirt or metallic particles on a mating plane surface can degrade repeatability
and accuracy, and can damage any connector mated to it. Improper connections resulting from
poor connection techniques can also damage these devices.
Visual inspection, cleaning techniques, and connection techniques are all described in Chapter 3,
"Making Connections".

1 General Information
14 Keysight V281C/D and W281C/D Operating and Service Manual
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Keysight V281C/D and W281C/D 1.0 mm Coaxial to Waveguide
Operating and Service Manual
15
2 Specifications
Environmental Requirements 16
Temperature — What To Watch Out For 16
Electrical Specifications 17
Mechanical Characteristics 17
Mechanical Dimensions 19

2 Specifications
16 Keysight V281C/D and W281C/D Operating and Service Manual
Environmental Requirements
Temperature — What To Watch Out For
Due to the critical dimensions and tight tolerances of the 1.0 mm connectors on your adapters,
electrical characteristics will change with temperature. The operating temperature is a critical
factor in the performance during measurements and between calibrations.
Table 2-1 Environmental requirements
Parameter Required values/ranges
Operating temperature 0 °C to 55 °C (32 °F to 131 °F)
Storage temperature –40 °C to 75 °C (–40 °F to 167 °F)
Altitude
– Operation
–Storage
–| 15,000 meters (_50,000 feet)
–|15,000 meters (_50,000 feet)
Relative humidity
–Operation
–Storage
Always non-condensing
– 0 to 80% (26 °C maximum dry bulb)
– 0 to 90%
NOTE
Remember your fingers are a heat source, so avoid handling the devices unnecessarily during
calibration.

Specifications 2
Keysight V281C/D and W281C/D Operating and Service Manual 17
Electrical Specifications
V281C and V281D
W281C and W281D
Mechanical Characteristics
Center conductor protrusion and pin depth
Mechanical characteristics such as center conductor protrusion and pin depth are not performance
specifications. They are important supplemental characteristics related to electrical performance.
Keysight Technologies verifies the mechanical characteristics of the V and W-band adapters with
special gaging processes and electrical testing. This ensures that the adapter connectors do not
exhibit any center conductor protrusion and have proper pin depth when they leave the factory.
Supplemental mechanical characteristics
Supplemental mechanical characteristics are values which are typically met by the majority of the
adapters tested at Hewlett–Packard. These supplemental characteristics are intended to provide
useful information. These are typical but non-warranted performance parameters. The following
table lists the typical mechanical characteristics of the 1.0 mm connectors in the V and W-band
adapters.
Frequency range 50 to 75 GHz
Return loss (at coaxial port only) –16 dB max
Frequency range 75 to 110 GHz
Return loss (at coaxial port only) –16 dB max
Table 2-2 Typical 1.0 mm connector characteristics
Characteristic Typical Value
Inside diameter of outer conductor 1.000 ±0.005 mm
Outside diameter of center conductor 0.434 ±0.005 mm
Pin depth 0 (flush) to 0.020 mm (maximum recession)
Flatness of reference plane 0.005 mm (worst case)

2 Specifications
18 Keysight V281C/D and W281C/D Operating and Service Manual
Table 2-3 Supplemental characteristics
V281C/D W281C/D
Maximum power:
@ 75, 110 GHz
Ambient
12 W
25 degrees
12 W
25 degrees
Net weight
0.1 kg
0.2 lbs
0.1 kg
0.2 lbs
Waveguide designator:
EIA
MIL-W-85
WR-15
3-018
WR-10
3-024
Flange designator:
UG - ( ) / U
MIL - F - 3922 / ( )
385
67B - 002
387
67B - 010
Insertion loss –0.8 dB max –1.0 dB max
Repeatability[a]
[a] Repeatability = 20 log I∆Γ Iwhere IΓm1– Γm21. This is the difference between two measurements Γm1and Γm2before and after one
disconnect/connect cycle at the coax port. Repeatability depends upon proper torque and pin depth.
–45 dB max –40 dB max

Specifications 2
Keysight V281C/D and W281C/D Operating and Service Manual 19
Mechanical Dimensions
Figure 2-1 V281C/D and W281C/D dimensions

2 Specifications
20 Keysight V281C/D and W281C/D Operating and Service Manual
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